They were called "Sport" cranks, and from early '70s. The rivets are factory.
Cheers,
Duane Kennard Los Angeles, USA
On Aug 29, 2005, at 10:21 AM, marc garcia wrote:
> I just recieved some campy steel gran sport cotterless
> cranks today and I have a question about the chain
> rings. The inner ring is riveted to the larger and
> before I bust out the hack saw I wanted to know if
> this was done at the factory or by someone in their
> garage. Also, when were these cranks produced, there
> aren't any markings on these.
>
> thanks
> marc garcia
> chicago IL